Malicious PDF — malware analysis report

Static analysis result for SHA-256 f22e069389fe7fcc…

MALICIOUS

PDF

62.0 KB Created: 2020-08-05 11:16:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a87352f323c5ddc53b0294363b78faf3 SHA-1: 533771de1f43c9c1a2f4f471fc397396eaf0fa21 SHA-256: f22e069389fe7fcc3b77a0db56e88a2c1505b59da5820f53a37cb5b2d252eed2
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with one specifically identified as a malicious redirector. The heuristic firings indicate a PDF link farm, suggesting the document's primary purpose is to redirect users to potentially harmful external content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=le+royaume+betsimisaraka+pdf
    • http://files.laurenvmiller.com/uploads/1/3/1/0/131070011/3f89a.pdf
    • http://nagolet.petersenacpcourses.com/uploads/1/3/1/8/131871740/refudogelezujabazi.pdf
    • http://files.alexandrakwilson.co.uk/uploads/1/3/1/8/131856435/2343367.pdf
    • http://files.ogdconsultinginc.com/uploads/1/3/0/8/130874317/jafitax_jotabefafunem_jutiw_vepexepuna.pdf
    • http://files.hmongunited.org/uploads/1/3/1/3/131380005/ecf026c75.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2322/files/muwixavivekavokolir.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/bidemale.pdf
    • https://cdn.shopify.com/s/files/1/0438/7209/2315/files/zojemoxedomazotejenomik.pdf
    • https://cdn.shopify.com/s/files/1/0439/9231/8110/files/xikanozavewu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1653/4685/files/totulifu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4428/1247/files/67209392586.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/85444728027.pdf
    • https://cdn.shopify.com/s/files/1/0431/5552/1687/files/gufokesaxutunopu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9780/1375/files/domestic_animals_flashcards.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34292265756.pdf
    • https://cdn.shopify.com/s/files/1/0432/4071/8496/files/22246077078.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/xelizojelojemifetoje.pdf
    • https://cdn.shopify.com/s/files/1/0430/6753/9605/files/how_do_i_reset_a_github_repository.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b058.bin
efb4d14f106b2f44a9ccd7b08b6b9c79b798ed29e218a5b5680b8ac3afd97513
pdf-font-stream PDF embedded font (sfnt) at offset 0xB058 5404 bytes
font_01_sfnt_off0000c2ab.bin
97ab02b3a074198442a889c88f2b72db8713302b9b5ba6a7988a7d26d1523bd2
pdf-font-stream PDF embedded font (sfnt) at offset 0xC2AB 12860 bytes